Improvement in carpet-linings



I To all 'whom it may concern:

UNITED STATES PATENT OFFICE.

ALFRED ROBINSON, OF NEW YORK, N. Y.

i IMPROVEMENT IN CARPET-LININGS.

Specication forming part of Letters Patent No.l9,8l6, dated January 1,1878; application led January 20, 1875.

Be it known that I, ALFRED ROBINSON, of the city and State of N ew York, have invented an Improvement in Carpet-Innings, of-

which the following is a specification:

Carpet-linings have been made of paper or similar flexible material, with perforations passing entirely through, and two or more fabrics or sheets have also been made use of.

My invention relates to an underlay or lining for carpets made of two thicknessesof paper or similar material, one of which is perforated, and the two thicknesses are united together, therebyT forming cells that are adapted l to receive the dust and gritty particles that sift through the carpet, and thus lessen the Wear upon the carpet and prevent the dust rising from the same when walked upon.

In the drawings, Figure 1 is a plan, and Fig. 2 is a section, of the said carpet-lining. Figs. 3 and 4 show, respectively, a face and edge view of the upper perforated sheet.

-The sheet of paper that comes uppermost when laid is perforated with numerous holes.

These should be of a moderate size-say, one` eighth to a quarter of an inch in diameter and about a quarter of an inch, more or less, from each other; and the other sheet is not perfo. rated, so that each cell has a bottom to it that prevents the dust passing through to the oor, the two sheets being united by paste or other suitable material.

`When the carpet-lining is in use the carpet is fully supported, and there is no tendency to cut'or injure the same upon the edges of the perforations, because such perforations are so small and the lining or underlay is sufficiently yielding or elastic.

The dust that accumulates in the cells .is easily removed by inverting the paper after thecarpet has been taken up.

I claim as my invention A carpet-lining made of two thicknesses of paper united together, in one of which thicknesses there are perforations, so that cells are formed in the paper for the reception of dust, and such cells do not pass through the paper, and hence the dust does not reach the floor,

substantially as set forth.

ALFRED ROBINSON. 

